WTF! Coolant Leak... - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

KiLLeR2001 · 05-22-2008, 06:54 PM

So I'm pulling into my driveway, and suddenly I hear a faint hissing sound, and then I smell the dreaded steaming coolant... So I pull my car in the garage and try to pinpoint the leak, it was steaming all around the intake manifold, so I'm praying to god its not something serious...

My immediate thought was one of the heater hoses split and its leaking somewhere, so I check those and they are fine. Now I get a little worried (coolant shooting out of the intake mani = me owned)... So I'm looking under my car and I spot the culprit hose. It's one of those short ones under the intake manifold that connects somewhere, its hard to tell with the intake manifold in the way...

It's one of those hoses that its leaking from, no way possible to get to from under or over the car.

I was wondering if anyone had to replace these hoses and whats the best and easiest way to get to them or any other information you can give me to help me out.

btw, this is a Redtop SR.

LA_phantom_240 · 05-22-2008, 06:57 PM

Looks like a heater hose.

KiLLeR2001 · 05-22-2008, 07:00 PM

Quote:

Originally Posted by LA_phantom_240

Looks like a heater hose.

Yeah its under the intake manifold, I was hoping it would be one of the ones that are easily accessible like the ones you have to do when you swap from KA --> SR, but its one of those short ones...

So do I need to remove the intake manifold? Need new intake manifold gasket?

Vernal · 05-22-2008, 07:01 PM

that is the heater hose and that shit is annoying as hell to get back on. You dont have to take the intake mani off. U just gotta push the hose back on. Good luck and have patience it took me an hour to get that one back on.

LA_phantom_240 · 05-22-2008, 07:05 PM

Patience is the best way.

Xandy Boosts · 05-22-2008, 07:24 PM

You sure it's leaking from only there?

I had a leak on one of my coolant hoses than run along the lower intake mani. I replaced one, two weeks later, another one blows. Just do what I did, take off mani and replace ALL the hoses withi new ones. Better peace of mind.

I never tried replacing the heater hoses with the manifold still on but I bet it surely is a bitch. And becareful with the plastic heater nipples that stick out of the firewall, don't tighten clamps too hard or they'll crack.

JeremyR · 05-22-2008, 07:42 PM

i had a problem with that hose too, i replaced it with a 5/8 90* heater hose cut to fit, couple hose clamps..bam..problem solved..

althought it is a VERY tight spot and a bitch to get to..

*fliprayzin240sx* · 05-22-2008, 07:42 PM

Take the intake manifold off, you can reuse the paper gasket as long as its not falling apart when you take it off, and replace all the hoses under there. If one pops now, more will pop later.

PS: Dont run high pressure Radiator Caps if you dont wanna blow more hoses...

KiLLeR2001 · 05-22-2008, 07:54 PM

I'm going to attempt to try it without removing the intake manifold. If it becomes a major bitch I'm ripping the manifold off.

LA_phantom_240 · 05-22-2008, 07:55 PM

Just take your time, man. You rush stuff and it gets sticky fast.

slider2828 · 05-22-2008, 08:13 PM

You need to rebuild the whole motor, cause it sucks... hahah just kidding... good luck.

HalveBlue · 05-22-2008, 11:27 PM

Easiest is such a subjective term.

If I were in your shoes I'd probably just take the intake mani off. That way you have more room to work with and you can see if anything else is fucked up. Then again, taking the manifold off can be a pain in the ass in its own right.

Good luck!

Raycampos · 06-09-2011, 01:01 PM

Its not a hard task
Replace all hoses with silicone grade hose
You'll need bout 6" of 3/4" 3' of 5/8" and bout 2-3 ' of 1/4 plus 2 1/4" 90 bends
Use worm drive hose clamps and your set you'll never have to worry bout it

Quote:

Originally Posted by HalveBlue

Easiest is such a subjective term.

If I were in your shoes I'd probably just take the intake mani off. That way you have more room to work with and you can see if anything else is fucked up. Then again, taking the manifold off can be a pain in the ass in its own right.

Good luck!

srstan · 06-09-2011, 01:17 PM

good job bringing this back from the dead...look at the date. Im pretty sure its fixed by now.

05-22-2008, 06:54 PM	#1
KiLLeR2001 Post Whore! Join Date: Jun 2007 Location: オーランドフロリダ Posts: 7,955 Trader Rating: (46) Feedback Score: 46 reviews	WTF! Coolant Leak... So I'm pulling into my driveway, and suddenly I hear a faint hissing sound, and then I smell the dreaded steaming coolant... So I pull my car in the garage and try to pinpoint the leak, it was steaming all around the intake manifold, so I'm praying to god its not something serious... My immediate thought was one of the heater hoses split and its leaking somewhere, so I check those and they are fine. Now I get a little worried (coolant shooting out of the intake mani = me owned)... So I'm looking under my car and I spot the culprit hose. It's one of those short ones under the intake manifold that connects somewhere, its hard to tell with the intake manifold in the way... It's one of those hoses that its leaking from, no way possible to get to from under or over the car. I was wondering if anyone had to replace these hoses and whats the best and easiest way to get to them or any other information you can give me to help me out. btw, this is a Redtop SR. __________________

05-22-2008, 07:24 PM	#6
Xandy Boosts Zilvia FREAK! Join Date: Dec 2004 Location: Long beach Age: 39 Posts: 1,003 Trader Rating: (2) Feedback Score: 2 reviews	You sure it's leaking from only there? I had a leak on one of my coolant hoses than run along the lower intake mani. I replaced one, two weeks later, another one blows. Just do what I did, take off mani and replace ALL the hoses withi new ones. Better peace of mind. I never tried replacing the heater hoses with the manifold still on but I bet it surely is a bitch. And becareful with the plastic heater nipples that stick out of the firewall, don't tighten clamps too hard or they'll crack. __________________ it's a RUCKUS life

05-22-2008, 07:42 PM	#8
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	Take the intake manifold off, you can reuse the paper gasket as long as its not falling apart when you take it off, and replace all the hoses under there. If one pops now, more will pop later. PS: Dont run high pressure Radiator Caps if you dont wanna blow more hoses... __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

05-22-2008, 07:54 PM	#9
KiLLeR2001 Post Whore! Join Date: Jun 2007 Location: オーランドフロリダ Posts: 7,955 Trader Rating: (46) Feedback Score: 46 reviews	I'm going to attempt to try it without removing the intake manifold. If it becomes a major bitch I'm ripping the manifold off. __________________

05-22-2008, 08:13 PM	#11
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	You need to rebuild the whole motor, cause it sucks... hahah just kidding... good luck. __________________ Turn and Burn!

05-22-2008, 07:01 PM	#4
Vernal Zilvia Junkie Join Date: Aug 2006 Location: Burbank, CA Posts: 517 Trader Rating: (0) Feedback Score: 0 reviews	that is the heater hose and that shit is annoying as hell to get back on. You dont have to take the intake mani off. U just gotta push the hose back on. Good luck and have patience it took me an hour to get that one back on.

05-22-2008, 07:42 PM	#7
JeremyR Zilvia FREAK! Join Date: Oct 2006 Location: California Age: 38 Posts: 1,153 Trader Rating: (10) Feedback Score: 10 reviews	i had a problem with that hose too, i replaced it with a 5/8 90* heater hose cut to fit, couple hose clamps..bam..problem solved.. althought it is a VERY tight spot and a bitch to get to..

05-22-2008, 11:27 PM	#12
HalveBlue Zilvia FREAK! Join Date: Mar 2004 Location: I'm somewhere where I don't know where I am! Posts: 1,549 Trader Rating: (0) Feedback Score: 0 reviews	Easiest is such a subjective term. If I were in your shoes I'd probably just take the intake mani off. That way you have more room to work with and you can see if anything else is fucked up. Then again, taking the manifold off can be a pain in the ass in its own right. Good luck!

06-09-2011, 01:17 PM	#14
srstan Zilvia Member Join Date: Oct 2010 Location: san antonio Posts: 203 Trader Rating: (3) Feedback Score: 3 reviews	good job bringing this back from the dead...look at the date. Im pretty sure its fixed by now. __________________